barrier/server/CServerProtocol1_0.cpp

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#include "CServerProtocol1_0.h"
#include "CServer.h"
#include "CClipboard.h"
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#include "CProtocolUtil.h"
#include "ProtocolTypes.h"
#include "XSynergy.h"
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#include "IInputStream.h"
#include "IOutputStream.h"
#include "CThread.h"
#include "CLog.h"
#include "CStopwatch.h"
#include <cstring>
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//
// CServerProtocol1_0
//
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CServerProtocol1_0::CServerProtocol1_0(CServer* server, const CString& client,
IInputStream* input, IOutputStream* output) :
CServerProtocol(server, client, input, output)
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{
// do nothing
}
CServerProtocol1_0::~CServerProtocol1_0()
{
// do nothing
}
void
CServerProtocol1_0::run()
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{
// handle messages until the client hangs up or stops sending heartbeats
CStopwatch heartTimer;
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for (;;) {
CThread::testCancel();
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// wait for a message
UInt8 code[4];
UInt32 n = getInputStream()->read(code, 4, kHeartRate);
CThread::testCancel();
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// check if client hungup
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if (n == 0) {
log((CLOG_NOTE "client \"%s\" disconnected", getClient().c_str()));
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return;
}
// check if client has stopped sending heartbeats
if (n == (UInt32)-1) {
/* FIXME -- disabled to avoid masking bugs
if (heartTimer.getTime() > kHeartDeath) {
log((CLOG_NOTE "client \"%s\" is dead", getClient().c_str()));
return;
}
*/
continue;
}
// got a message so reset heartbeat monitor
heartTimer.reset();
// verify we got an entire code
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if (n != 4) {
log((CLOG_ERR "incomplete message from \"%s\": %d bytes", getClient().c_str(), n));
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// client sent an incomplete message
throw XBadClient();
}
// parse message
log((CLOG_DEBUG2 "msg from \"%s\": %c%c%c%c", getClient().c_str(), code[0], code[1], code[2], code[3]));
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if (memcmp(code, kMsgDInfo, 4) == 0) {
recvInfo();
}
else if (memcmp(code, kMsgCNoop, 4) == 0) {
// discard no-ops
continue;
}
else if (memcmp(code, kMsgCClipboard, 4) == 0) {
recvGrabClipboard();
}
else if (memcmp(code, kMsgDClipboard, 4) == 0) {
recvClipboard();
}
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// FIXME -- more message here
else {
log((CLOG_ERR "invalid message from client \"%s\"", getClient().c_str()));
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// unknown message
throw XBadClient();
}
}
}
void
CServerProtocol1_0::queryInfo()
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{
log((CLOG_DEBUG1 "querying client \"%s\" info", getClient().c_str()));
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// send request
CProtocolUtil::writef(getOutputStream(), kMsgQInfo);
// wait for and verify reply
UInt8 code[4];
for (;;) {
UInt32 n = getInputStream()->read(code, 4, -1.0);
if (n == 4) {
if (memcmp(code, kMsgCNoop, 4) == 0) {
// discard heartbeats
continue;
}
if (memcmp(code, kMsgDInfo, 4) == 0) {
break;
}
}
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throw XBadClient();
}
// handle reply
recvInfo();
}
void
CServerProtocol1_0::sendClose()
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{
log((CLOG_DEBUG1 "send close to \"%s\"", getClient().c_str()));
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CProtocolUtil::writef(getOutputStream(), kMsgCClose);
// force the close to be sent before we return
getOutputStream()->flush();
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}
void
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CServerProtocol1_0::sendEnter(SInt32 xAbs, SInt32 yAbs,
UInt32 seqNum, KeyModifierMask mask)
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{
log((CLOG_DEBUG1 "send enter to \"%s\", %d,%d %d %04x", getClient().c_str(), xAbs, yAbs, seqNum, mask));
CProtocolUtil::writef(getOutputStream(), kMsgCEnter,
xAbs, yAbs, seqNum, mask);
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}
void
CServerProtocol1_0::sendLeave()
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{
log((CLOG_DEBUG1 "send leave to \"%s\"", getClient().c_str()));
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CProtocolUtil::writef(getOutputStream(), kMsgCLeave);
}
void
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CServerProtocol1_0::sendClipboard(ClipboardID id, const CString& data)
{
log((CLOG_DEBUG "send clipboard %d to \"%s\" size=%d", id, getClient().c_str(), data.size()));
CProtocolUtil::writef(getOutputStream(), kMsgDClipboard, id, 0, &data);
}
void
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CServerProtocol1_0::sendGrabClipboard(ClipboardID id)
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{
log((CLOG_DEBUG "send grab clipboard %d to \"%s\"", id, getClient().c_str()));
CProtocolUtil::writef(getOutputStream(), kMsgCClipboard, id, 0);
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}
void
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CServerProtocol1_0::sendScreenSaver(bool on)
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{
log((CLOG_DEBUG1 "send screen saver to \"%s\" on=%d", getClient().c_str(), on ? 1 : 0));
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CProtocolUtil::writef(getOutputStream(), kMsgCScreenSaver, on ? 1 : 0);
}
void
CServerProtocol1_0::sendInfoAcknowledgment()
{
log((CLOG_DEBUG1 "send info ack to \"%s\"", getClient().c_str()));
CProtocolUtil::writef(getOutputStream(), kMsgCInfoAck);
}
void
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CServerProtocol1_0::sendKeyDown(KeyID key, KeyModifierMask mask)
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{
log((CLOG_DEBUG1 "send key down to \"%s\" id=%d, mask=0x%04x", getClient().c_str(), key, mask));
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CProtocolUtil::writef(getOutputStream(), kMsgDKeyDown, key, mask);
}
void
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CServerProtocol1_0::sendKeyRepeat(KeyID key, KeyModifierMask mask, SInt32 count)
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{
log((CLOG_DEBUG1 "send key repeat to \"%s\" id=%d, mask=0x%04x, count=%d", getClient().c_str(), key, mask, count));
CProtocolUtil::writef(getOutputStream(), kMsgDKeyRepeat, key, mask, count);
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}
void
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CServerProtocol1_0::sendKeyUp(KeyID key, KeyModifierMask mask)
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{
log((CLOG_DEBUG1 "send key up to \"%s\" id=%d, mask=0x%04x", getClient().c_str(), key, mask));
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CProtocolUtil::writef(getOutputStream(), kMsgDKeyUp, key, mask);
}
void
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CServerProtocol1_0::sendMouseDown(ButtonID button)
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{
log((CLOG_DEBUG1 "send mouse down to \"%s\" id=%d", getClient().c_str(), button));
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CProtocolUtil::writef(getOutputStream(), kMsgDMouseDown, button);
}
void
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CServerProtocol1_0::sendMouseUp(ButtonID button)
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{
log((CLOG_DEBUG1 "send mouse up to \"%s\" id=%d", getClient().c_str(), button));
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CProtocolUtil::writef(getOutputStream(), kMsgDMouseUp, button);
}
void
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CServerProtocol1_0::sendMouseMove(SInt32 xAbs, SInt32 yAbs)
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{
log((CLOG_DEBUG2 "send mouse move to \"%s\" %d,%d", getClient().c_str(), xAbs, yAbs));
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CProtocolUtil::writef(getOutputStream(), kMsgDMouseMove, xAbs, yAbs);
}
void
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CServerProtocol1_0::sendMouseWheel(SInt32 delta)
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{
log((CLOG_DEBUG2 "send mouse wheel to \"%s\" %+d", getClient().c_str(), delta));
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CProtocolUtil::writef(getOutputStream(), kMsgDMouseWheel, delta);
}
void
CServerProtocol1_0::recvInfo()
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{
// parse the message
SInt16 x, y, w, h, zoneInfo, mx, my;
CProtocolUtil::readf(getInputStream(), kMsgDInfo + 4,
&x, &y, &w, &h, &zoneInfo, &mx, &my);
log((CLOG_DEBUG "received client \"%s\" info shape=%d,%d %dx%d, zone=%d, pos=%d,%d", getClient().c_str(), x, y, w, h, zoneInfo, mx, my));
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// validate
if (w <= 0 || h <= 0 || zoneInfo < 0) {
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throw XBadClient();
}
if (mx < x || my < y || mx >= x + w || my >= y + h) {
throw XBadClient();
}
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// tell server of change
getServer()->setInfo(getClient(), x, y, w, h, zoneInfo, mx, my);
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}
void
CServerProtocol1_0::recvClipboard()
{
// parse message
ClipboardID id;
UInt32 seqNum;
CString data;
CProtocolUtil::readf(getInputStream(), kMsgDClipboard + 4, &id, &seqNum, &data);
log((CLOG_DEBUG "received client \"%s\" clipboard %d seqnum=%d, size=%d", getClient().c_str(), id, seqNum, data.size()));
// validate
if (id >= kClipboardEnd) {
throw XBadClient();
}
// send update
getServer()->setClipboard(id, seqNum, data);
}
void
CServerProtocol1_0::recvGrabClipboard()
{
// parse message
ClipboardID id;
UInt32 seqNum;
CProtocolUtil::readf(getInputStream(), kMsgCClipboard + 4, &id, &seqNum);
log((CLOG_DEBUG "received client \"%s\" grabbed clipboard %d seqnum=%d", getClient().c_str(), id, seqNum));
// validate
if (id >= kClipboardEnd) {
throw XBadClient();
}
// send update
getServer()->grabClipboard(id, seqNum, getClient());
}